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Finding the Fourth Proportional to 5,673.85, 8,509.65 and 5,392.55

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Solution

The fourth proportional to 5,673.85, 8,509.65 and 5,392.55 is: 8,087.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,673.85 : 8,509.65 = 5,392.55 : x
  2. Step 2: Convert to fraction form
    5,673.85/8,509.65 = 5,392.55/x
  3. Step 3: Cross multiply
    5,673.85x = 8,509.65 × 5,392.55
  4. Step 4: Simplify right side
    5,673.85x = 45,888,713.11
  5. Step 5: Solve for x
    x = 45,888,713.11/5,673.85
  6. Step 6: Final answer
    x = 8,087.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.